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Mechanical Engineering Material response to micro structural mechanical thermal and biological stimuli Experiments

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Indent depth

Choose difficulty:

Beginner

Intermediate

Advanced

1. Hardness is defined as:

a: Impression created by indenter Explanation

Explanation

b: Stiffness of the material Explanation

Explanation

c: How strong is the material Explanation

Explanation

d: Resistance to plastic deformation Explanation

Explanation

2. Hardness is proportional to:

a: Load/ diameter of contact surface Explanation

Explanation

b: Load/ Area of contact surface Explanation

Explanation

c: Load/ Length of contact surface Explanation

Explanation

d: Load/radius of contact surface Explanation

Explanation

3. Which of the following material typically has higher elastic modulus ?

a: Polymer Explanation

Explanation

b: Metal Explanation

Explanation

c: Glass Explanation

Explanation

d: Ceramic Explanation

Explanation

4. Nanoindentation can NOT evaluate:

a: Elastic modulus Explanation

Explanation

b: Hardness Explanation

Explanation

c: Fracture toughness Explanation

Explanation

d: Yield strength Explanation

Explanation

5. Elastic modulus of the material during P-h curve is evaluated using the material response at:

a: Start of loading cycle Explanation

Explanation

b: Start of holding cycle Explanation

Explanation

c: Start of unloading cycle Explanation

Explanation

d: Completion of unloading cycle Explanation

Explanation

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